The Speedmaster PCE276.1060 is a 4340 forged crankshaft engineered for Chevy LS applications, featuring a 4.000-inch stroke, 2.100-inch rod journal diameter, and a 6.098-inch main rod length. Internally balanced with a 1-piece rear main seal configuration, this crank is built for high-performance street and race LS engine builds demanding strength and reliability beyond OEM components.
Constructed from 4340 forged steel, this crankshaft delivers superior tensile strength and fatigue resistance compared to cast alternatives, making it an ideal foundation for boosted, nitrous, or high-revving naturally aspirated LS builds. Designed to fit standard LS main journal specs, it integrates seamlessly into your rotating assembly upgrade. Always verify fitment with your specific block, rods, and pistons before final assembly.
